For what it's worth, I got a gel battery when my stock battery finally gave up the ghost earlier this year. Here's the link where I talked about it. It fit right in and I've been pretty pleased with it.

Steve

Blue/White 2007 TBA, Thruxton needles, Unifilter, AI removed, Polaris Bellmouth, Bubs, Nology Coils/wires, Lightbar, Ricor Intiminators, Hagon Nitros, Tall Sissy Bar w/luggage rack, Dart flyscreen & Lowers. 130 Mains, TrueGel Battery MG12-BS.